Hey guys I just got my 85 lt250r a couple months ago. It has a ton of compression, starts and runs crisp, but when I get on it it doesn’t seem to have the power and I am used to at all. Has a full FMF exhaust and open air filter, which is why I won’t ride it in dirt yet.I just found an airbox inline. I was thinking maybe not jetted right, or carb air/fuel maybe. I run 40:1. Thank you. Never had this problem with a 2 stroke and I have had many.